Switching device for radio sets



1,544.486 J. SEDLAK G B 8 FOR RADIO SBTS Filed In :1. 192':

June 30, 1925.

"IV IITU Jlcan Sum.

87 w I W678 Patented June 30, 19 25.

JACOB SEDLAK, or n. Y.

SWITCHING DEVICE FOR RADIO SETS.

Application filed May 31, 1924. Serial No. 717,054.

To all whom it may concern:

Be it known that I, JACOB SEDLAK, a citizen of the United States, and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have invented a new and Improved Switching Device for Radio Sets, of which the following is a full, clear, and exact description.

This invention relates to a switching device for radio sets.

In the construction and arrangement of the ordinary radio set the apparatus is usually mounted on the back of a panelboard as well as on the top of a baseboard, the panel and the baseboard being connected together and disposed at right angles each other, forming a removable unit which can be inserted into and removed from a cabinet. When this unit is inserted in the cabinet itis necessary to have on it binding posts to which a plurality of wires have to be attached. The wires above referred to are thus leading from the antenna to the battery and to the ground, as well as any other wires which may lead away from the cabinet. Therefore, whenever it is desired to remove the unit from the cabinet it becomes necessary to detach this plurality of wires, and this operation takes time, and, 1f the apparatus is rather compactly arranged, may be rather a nuisance.

It is the main object of my invention to avoid this difficulty by providing a switch,

' one portion of which is associated with a removable unit and the other portion of which is associated witha cabinet so that whenever it is desired to disconnect the wires leading into the cabinet from the removable unit itis merely necessary to open the switch, which movement will disconnect all the wires. at one time and instantly. The stationary portion of the switch connected to the cabinet may be connected to the wires which ordinarily lead into the system and are ordinarily connected to the removable unit.

The drawings illustrate the invention, in which Figure 1 represents a perspective view of the rear of the cabinet with the switch at-' tached; and

Figure 2 is a section on the line 22 of Figure 1.

The form of the invention shown in the drawings is a preferred form, although it is understood that modifications in the construction and arrangement of the parts and inthe character of the materials used may be adopted without departing from the spirit of the invention as set forth in the appended claims.

The preferred form of the invention, as shown in the drawings, includes the application of a switch device to the rear of a cabinet 1 in which a removable baseboard 2 is mounted, this board forming part of a removable unit on which a portion of the apparatus is mounted. The rear wall of the cabinet 1 is cut away to receive an'insulating plate 3 connected to the rear of the removable unit. On the rear of this plate a plurality of switch elements 4 are mounted, these mountings being shown in the form of spring clips. There may be one or a dozen of these clips mounted on the rear plate These clips are mounted on the plate by means of screws 5, or other devices to which wires such as 6 may be connected, these wires leading to various parts of the apparatus mounted on the board 2. Adapted to be associated with the clips at are a plurality of switch knife blades 7, of which there are as many as there are clips. These blades are connected by an insulating bar 8 operated by a handle 9. The blades are pivoted on bracket members 10 connected to the bottom of the cabinet on an insulating wall or plate 11. Associated with the brackets 10 are a plurality of binding-post devices 12 to which wires 13 may be connected, these wires leading from any suitable points, such as the antenna and the battery. It is obvious that when the switch is closed the outside parts are connected to the various parts of the radio set and that by merely opening the switch all these wires are disconnected immediately, so that the whole removable unit can be taken out of the cabinet without the necessity for the laborious operation of disconnecting the mounted on the movable element and adapt- 10 wires. ed to be alined with the plate on the cablVhat I claim is inet, and a plurality of eo-operating switch In a radio set comprising a cabinet, a reelements on the second mentioned plate of movable unit. an insulating plate mounted the removable unit whereby connections on the cabinet, a multiblade switch element may be made to the plurality of wires on the 15 mounted on the insulating plate, to which unit by one operation of the switch.

switch element a plurality of wires is adapted to be connected, an insulating plate JACOB SEDLAK. 

